Can the cool cloud still be used now?

I can't. According to the introduction of Kuyun Baidu Encyclopedia, on August 25th, 20021year, Kuyun was taken off the shelves of the Ministry of Industry and Information Technology because it failed to complete the rectification within the time limit due to infringement of users' rights and interests, which made it unusable. Cool Cloud is a system tool-based mobile phone application. The main functions include two-way real-time synchronous backup of contacts, massive backup of short messages, synchronous collaboration of schedules, and massive backup of call records.